text: /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef _NAMESPACE_H_
  #define _NAMESPACE_H_
  #ifdef __KERNEL__
  
  struct mnt_namespace;
  struct fs_struct;
  struct user_namespace;
  
  extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
  		struct user_namespace *, struct fs_struct *);
  extern void put_mnt_ns(struct mnt_namespace *ns);
  
  extern const struct file_operations proc_mounts_operations;
  extern const struct file_operations proc_mountinfo_operations;
  extern const struct file_operations proc_mountstats_operations;
  
  #endif
  #endif
  